The Effects of Distance Education on K-12 Student Outcomes: A ...

Appendix A
Coded Variables and Study Features in the Codebook
A. Identification <strong>of</strong> studies
1. Study number (“study”).
2. Finding/hypothesis number (“finding”).
3. Author name (“author”). Last name <strong>of</strong> first author.
4. Year <strong>of</strong> publication (“year”).
5. Number <strong>of</strong> findings/hypotheses within study (“number”).
6. Country (“country”).
Unspecified=0,
USA=1,
Canada=2,
Mexico/Central America/South America=3,
Europe=4,
Asia=5,
Africa=6,
Australia/Pacific=7,
Multinational=8,
Other=9.
7. Grade level <strong>of</strong> students (“grade”).
Unspecified=00,
grades 1-12 use 01 to 12,
mixed primary (K-2) =13,
mixed intermediate (3-5) =14,
mixed middle (6-8) =15,
mixed high (9-12) =16,
K-12=17,
other=18.
8. School type (“school”).
Unspecified=0,
Public district sponsored=1,
Public state sponsored=2,
Private=3,
Other=4,
Charter=5,
Combination=6.
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